![]() | |||||||||||||
Messages in this thread |
Oliver Neukum wrote: >On Wed, 9 Nov 2005, Jeff Garzik wrote: > > > >>Has anybody put any thought towards how a userspace block driver would work? >> >>Consider a block device implemented via an SSL network connection. I don't >>want to put SSL in the kernel, which means the only other alternative is to >>pass data to/from a userspace daemon. >> >> > >I am afraid this is impossible without some heavy infrastructure work. >You will almost inevitably deadlock. Yes, you can mlock() your driver, but >that still will not tell the kernel that GFP_KERNEL must be replaced with >GFP_NOIO if it is triggered by syscalls you are doing. > > > A simple patch can help here (in addition to mlockall()): http://www.ussg.iu.edu/hypermail/linux/kernel/0407.3/0297.html you might want to increase the free memory target as well. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
| Last update: 2005-11-09 09:40 [from the cache] ©2003-2008 | |||||||||||||